MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with operating temperatures ranging from -65 °C to 200 °C. This connector family offers front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs, available in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they ensure reliable connections in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). Constructed with high-strength aluminum shells, these connectors come in various plating options, including light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS-certified cadmium-free finishes. Perfect for military and industrial applications, these MIL-DTL-38999 I connectors, with a contact gender of male, offer exceptional conductivity and environmental protection, making them ideal for use in demanding settings.